Can vitamin B12 deficiency from a vegan diet cause subacute combined degeneration in teenagers?

1 min readUpdated July 30, 2026

What the Evidence Shows

Based on the evidence we have reviewed so far, our analysis leans toward the conclusion that vitamin B12 deficiency from a strict vegan diet can be linked to subacute combined degeneration in teenagers. We examined one assertion supported by 20 studies or case reports, with no evidence we've seen...

Evidence from Studies

Supporting (0)
No supporting evidence found
Contradicting (0)
No contradicting evidence found
Primary Studies (1)

Reversible Subacute Combined Degeneration of the Spinal Cord in a 14-Year-Old Due to a Strict Vegan Diet

DOI: 10.1177/000992280104000710

Update History

Published
July 30, 2026·Last updated July 30, 2026
  • Invalid DateNew topic created from assertion

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